Isolate PHP applications with Docker

Question

I am trying to setup set of docker containers to serve couple of applications. One of my goals is to isolate PHP applications from eachother.

I am new to Docker and not fully understand its concepts. So only idea i came up with is to create a dedicated php-fpm container per-application.

I started with official image: php:7.0-fpm but now I think that I may need to create my own general purpose pfp-fpm container (based on mentioned above), add some programs to it (such as ImageMagick) and instantiate couple of such php-fpm+stuff containers per PHP-application, setting up volume pointing strictly to that application source code.

Is what I’m thinking correct?

Answer 1

That is the idea: you can make a Dockerfile starting with FROM php:7.0-fpm, with your common programs installed in it.

Then you can make a multiple other Dockerfiles (each in their different folder), starting with FROM <yourFirstImage>, and declaring specifics to each php applications.